Baking Oven Structure

ABSTRACT

An improved baking oven structure has a main body comprising an external drum and an internal drum. The external drum is connected to an end portion of the internal drum. A gas chamber is formed between the external drum and the internal drum. The external drum is provided with an air inlet and at least an exhaust outlet communicating with the gas chamber. A baking chamber is disposed in the internal drum. The baking chamber has an opening. The opening is opened or closed by a valve. Food can be placed on an article placing rack in the baking chamber. A heat source can enter into the gas chamber through the air inlet of the external drum and can be exhausted from the exhaust outlet, thereby forming the structure.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an improved baking oven structure, and more particularly to an appliance for baking food.

2. Description of the Related Art

As shown in FIG. 7, a conventional vertical baking oven 9 is depicted. An internal drum 91 is placed from an upper portion of an external drum 90. A top of the internal drum 91 has an upward opening (not shown in the figure). Food that will be baked can be placed in the internal drum 91 from the opening, and a cover body 92 covers the opening. A fire source is ignited through a charcoal opening 900 at a bottom of the external drum 90, and the internal drum 91 is heated below the internal drum 91.

However, food in the internal drum 91 may not be uniformly heated due to the heating manner, and a top of the internal drum 91 can be merely provided with one opening. Food can be merely placed in or taken out of the opening to restrict the utilization, resulting in shortcoming to be overcome.

SUMMARY OF THE INVENTION

In view of the shortcomings of the prior art, the inventor(s) of the present invention based on years of experience in the related industry to conduct extensive researches and experiments, and finally developed an improved baking oven structure to overcome the foregoing problem.

A first objective of the invention is to provide an improved baking oven structure for uniformly heating food.

A second objective of the invention is to place food in or take food out of two ends of a main body of the improved baking oven structure.

A third objective of the invention is to have well conducting effect when smoke generated by a fire source flows in a gas chamber of the improved baking oven structure.

A fourth objective of the invention is to have an efficacy of releasing pressure when the gas pressure in the baking chamber of the internal drum is extremely high.

A fifth objective of the invention is to utilize an oil dropping basin to receive oil when food baked on the article placing rack drops oil.

A sixth objective of the invention is to utilize a fire source of an oven rack as a heat source when the main body is placed on the oven rack.

To achieve the foregoing objectives, the structure comprises: a main body showing a drum shape, the main body comprising an external drum and an internal drum, a bottom of the external drum of the main body placed on an oven rack and lain down, two ends of the main body connected to end portions of the external drum and the internal drum through each circular wall portion to form a gas chamber between the external drum and the internal drum; a bottom of the external drum having at least one air inlet, a top of the external drum having at least an exhaust outlet, the air inlet and the exhaust outlet respectively communicating the gas chamber; the internal drum having a baking chamber, at least one end of the baking chamber at two ends of the main body having an opening, at least one valve disposed to the main body to open and close the opening, and at least an article placing rack disposed in the baking chamber.

At least one chimney is disposed to the exhaust outlet of the external drum. A top of the internal drum has an exhaust pipe protruding the external drum. A top of the exhaust pipe has a pressure relief port. A sealing cap is disposed to the pressure relief port and provided with a flexible member to push toward the pressure relief port. The sealing cap seals the pressure relief port.

An oil dropping basin is disposed under a bottom of the article placing rack in the baking chamber. Two ends of the baking chamber of the main body respectively have an opening. A valve is correspondingly disposed to each opening of the main body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional drawing according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional drawing according to a first embodiment of the present invention;

FIG. 3 is a schematic diagram of assembling an exhaust pipe and a sealing cap according to a first embodiment of the present invention;

FIG. 4 is a schematic diagram of baking food according to a first embodiment of the present invention;

FIG. 5 is a schematic diagram of baking food through heat flowing in the structure according to a first embodiment of the present invention;

FIG. 6 is schematic diagram of a motion of depressurizing pressure through a sealing cap according to a first embodiment of the present invention; and

FIG. 7 is a schematic diagram of a conventional baking oven structure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The foregoing and other technical characteristics of the present invention will become apparent with the detailed description of the preferred embodiments and the illustration of the related drawings.

With reference to FIG. 1 to FIG. 6 for a structure selected in accordance with an embodiment of the invention is depicted. An improved baking oven structure is provided as shown in a first embodiment and comprises a main body 1 that is a drum shape in the embodiment. The main body is placed on an oven rack 5 and lain down while placing it.

As shown in FIG. 1 and FIG. 2, the main body 1 is composed of an external drum 2 and an internal drum 3. A gas chamber 4 is between the external drum 2 and the internal drum 3. In the embodiment, the external drum 2 and the internal drum 3 corresponding to a shape of the main body 1 shows the drum shape, and the gas chamber is circularly surrounded between the external drum 2 and the internal drum 3.

As shown in FIG. 1 and FIG. 2, a bottom of the external drum 2 in the embodiment has a plurality of air inlets 20. While placing the main body, the plurality of air inlets 20 is downward, and a top of the external drum 2 has at least an exhaust outlet 21. The plurality of air inlets 20 and the exhaust outlet 21 respectively communicate with the gas chamber 4. In the embodiment, the external drum 2 is provided with at least one chimney 22 at the exhaust outlet 21 so that gas within the gas chamber 4 can be smoothly introduced and exhausted from the exhaust outlet 20.

As shown in FIG. 1 and FIG. 2, the internal drum 3 has a baking chamber 30. At least an article placing rack 30 is disposed in the baking chamber 30. Two ends of the baking chamber 30 relative to the main body 1 in the embodiment are that one end is an opening end 300. A valve 32 is disposed to the opening end 300 of the main body 1. A bottom of the article placing rack 31 in the embodiment has an oil dropping basin 310. A bottom of the oil dropping basin 310 is placed in the baking chamber 30 by corresponding to an inner shape of a bottom of the internal drum 3. The oil dropping basin 310 below the article placing rack 31 can receive dropped oil when food is baking to drop oil. At least one sliding rail 311 is respectively disposed to two corresponding sides of the baking chamber 30 of the internal drum 3 in the embodiment. The article placing rack 31 can be slidably disposed to two sliding rails 311.

As shown in FIG. 2 and FIG. 3, a top of the internal drum 3 in the embodiment has an exhaust pipe 33. The exhaust pipe 33 protrudes the external drum 3. A top of the exhaust pipe 33 has a pressure relief port 330. A sealing cap 331 is disposed to the pressure relief port 330. The sealing cap 331 is provided with a flexible member 332 to push toward the pressure relief port 330 to allow the sealing cap 331 to seal the pressure relief port 330.

An oven rack 5 in the embodiment has a shape corresponding to the bottom of the external drum 2. When the external drum 2 of the main body 1 is placed on the oven rack 5, the air inlet 20 is wrapped by the oven rack 5. In addition, at least one opening 50 is disposed to the oven rack 5. A fire source can be placed in the oven rack 5 through the opening 50.

When the baking oven in the embodiment is used, the oven rack 5 having the fire source is positioned. The main body 1 is lain down, and the external drum 2 is placed on the oven rack 5. The valve 32 is opened to open the opening end 300 to place food to be baked on the article placing rack. The valve 32 then is closed to seal the opening end 300. As shown in FIG. 4 and FIG. 5, while in baking, the fire source in the oven rack 5 is utilized to provide heat source for the bottom of the main body 1. Since the plurality of air inlets 20 at the bottom of the external drum 2 is downward, heat of the fire source enters the gas chamber 4 from the plurality of air inlets 20 and upwardly flows to exhaust from the exhaust outlet 21 in the chimney 22. In the process, heat flees at an external periphery of the internal drum 3 to uniformly heat the internal drum 3.

Since a top of the exhaust pipe of the internal drum 3 is sealed by the sealing cap 331, the baking chamber 30 is still a sealing space. After the baking chamber 30 of the internal drum 3 is heated, the air pressure within the baking chamber 30 is increased. The air pressure in the baking chamber 30 is higher than the push force of the flexible member 332. The sealing cap 331 is outwardly pushed as shown in FIG. 6, and the increased air pressure in the baking chamber 30 is released.

Advantages of the invention can be found through the foregoing depiction. Heat generated by the fire source can enter the gas chamber 4 from the air inlets 20 at the bottom of the external drum 2 and be exhausted from the exhaust outlet 21 in the chimney 22 to uniformly heat the internal drum 3 so that food in the baking chamber 30 can be uniformly heated.

In addition, one end of the main body 1 is the opening end 300. Two ends of the main body 1 can also be provided with opening ends 300 in another embodiment. A valve 32 is respectively disposed to the opening ends 300. Accordingly, while placing food in the baking chamber 30 or taking baked food from the baking chamber 30, the opening ends 300 at two sides can be randomly selected to conveniently use the baking oven to bake food.

The invention improves over the prior art and complies with patent application requirements, and thus is duly filed for patent application. While the invention has been described by device of specific embodiments, numerous modifications and variations could be made thereto by those generally skilled in the art without departing from the scope and spirit of the invention set forth in the claims. 

1. An improved baking oven structure having a main body showing a drum shape and lain down while placing the main body, the main body composed of an external drum and an internal drum, a gas chamber between the external drum and the internal drum; at least one air inlet disposed at a bottom of the external drum, the air inlets being downward while placing the main body, a top of the external drum having at least an exhaust outlet, the air inlets and the exhaust outlet communicating with the gas chamber; the internal drum having a baking chamber, at least an article placing rack disposed in the baking chamber, at least one end of two ends of the baking chamber in the main body being an opening end, a valve disposed to the opening end of the main body.
 2. The improved baking oven structure as recited in claim 1, wherein a bottom of the main body is placed on an oven rack having a fire source, and the oven rack has a shape corresponding to a bottom of the external drum, the air inlet is surrounded by the oven rack when the main body is placed on the oven rack, and the oven rack has an opening for placing a fire source.
 3. The improved baking oven structure as recited in claim 2, wherein two ends of the baking chamber in the main body have an opening, and each opening is equipped with a valve corresponding to the main body.
 4. The improved baking oven structure as recited in claim 2, wherein the external drum has at least one chimney at an exhaust outlet.
 5. The improved baking oven structure as recited in claim 4, wherein a top of the internal drum has at least an exhaust pipe protruding the external drum, and a top of the exhaust pipe has at least one pressure relief port, and a sealing cap is provided with a flexible member to push toward the pressure relief port, and the sealing cap seals the pressure relief port.
 6. The improved baking oven structure as recited in claim 5, wherein at least an oil dropping basin is disposed under a bottom of the article placing rack in the baking chamber, and a bottom of the oil dropping basin is placed in the baking chamber by corresponding to an inner shape of a bottom of the internal drum.
 7. The improved baking oven structure as recited in claim 6, wherein at least one sliding rail is respectively at two corresponding sides of the baking chamber of the internal drum, and the article placing rack is slidably disposed at two sliding rails.
 8. The improved baking oven structure as recited in claim 3, wherein the external drum has at least one chimney at an exhaust outlet.
 9. The improved baking oven structure as recited in claim 8, wherein a top of the internal drum has an exhaust pipe protruding the external drum, and a top of the exhaust pipe has a pressure relief port, and a sealing cap is provided with a flexible member to push toward the pressure relief port, and the sealing cap seals the pressure relief port, and the external drum has at least one chimney at an exhaust outlet.
 10. The improved baking oven structure as recited in claim 9, wherein an oil dropping basin is disposed under a bottom of the article placing rack in the baking chamber. 